Improved adjustable curtain-weight



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W. F. lSHAW, OF BOS TON., MASSACHUSE TTS.

Laim Patent No.i 87,209, dated February 23,1869.

IMPROVED ADJUSTABLE CURTAIN-WEIGHT.

The Schedule referred to in these Letters Patent and making part of the sarna.

To all whom it may concern.-

Be it knownthat I, W. F. SHAW, of Boston, in the county of Suffolk, and 4Commonwealth of Massachusetts, have invented a new and useful Adjustable Curtain-Veight; and I hereby declare'the following to be a full, clear, and exact description thereof, which 'will the same are new, will often prove too heavy when the' roller has been used sufciently long to run easier than at first, and, when this is the case, the weightwill' wind up the curtain, even when the same is drawn down so as to cover the whole window.

It is, moreover, often the case, that, when curtainsare set up, it-is found that the weights are not adjusted to the curtain, and so prevent the proper op eration of the same.

They are often-too heavy or too light.

With the tubular spring-roll curtains, now in general use, the accurate adjustment of the'weight or spring is eected so as to require no change, at least for a time; but my invention relates to that kindl of curtain in which the weight is attached to a string, and the string winds up on the roller, upon which`the cur.- tain is also wound.

a shows a head, with ahole therein to receive the string b, which is knotted on theinside to keep it in place.

This head has a screw, c, tting the ,screw d in the cap e. l To this cap e is attached the rubber bulb f, in which is placed any substance, like shot, to actas a weight. It will be seen that the head a can be unscrewed so as to open the bulb, and thus allow an addition to, or

a diminution of the weighting-substance, so that-the weight can be accurately adjusted to the weight of the curtain. l

, Sand can be employed instead of shot.

When the head is unscrewed there is no inconvenience, because the stringuis attached to the head.

The rubber ,of the bulb will prevent the weight4 breaking the glass, if it should swing against the same.

When the curtain has Worn enough to run so easily.

thatthe weight will hold up the curtain, even when drawn down at full length, and, in consequence, the curtain cannot be kept so as to cover the window, un.- less the weight is so arranged as not to draw on the roller, then, by removing the head and taking out a portion of the weighting-substance, the perfect opertion of the weight and roller can be'secured.

What I claim as my invention, and desire to secure yby Letters Patent, is-

The adjustable curtain-weight, consisting oi' 'the rubber bulb f, or yits equivalent, screw c, screw d, cap

e, and cord b, constructed substantially as and for the purpose specified.

' W. F. SHAW. Witnesses:

' D. Bowman,

J. H. WHALEN. 

